[FFmpeg-user] Rotate 180 degrees

[Cecil Westerhof]

When making a video with my android, the video is rotate 180 degrees.
At the moment I convert it to a video with the correct orientation
with:
    ffmpeg \
      -y \
      -i input.mp4 \
      -metadata:s:v rotate="0" -vf "hflip,vflip" \
      -c:v libx264 \
      -crf 18 \
      -acodec copy \
      flipped.mp4

The result looks reasonable. But is there a better way to do this? A
video of 13 minutes takes about as long to be converted. So if there
would be a more efficient way …

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof